What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Back to Search

ustc.edu.cn

https://ustc.edu.cn· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

ustc.edu.cn

Mobile

Sponsored

Hosting Provider

The University of Science and Technology of China

IP Address

202.38.64.246

Server Location

🇨🇳 Hefei, China

ASN

AS24362

Organization

The University of Science and Technology of China

Server

Nginx

Nameservers

mx.ustc.edu.cn.ns.ustc.edu.cn.

Performance

Page Speed

1.4 MB

51 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

The University of Science and Technology of China

Technology Stack

5 Technologies Detected

Libraries

UI Components

Other

CSS Frameworks

Web Servers

SEO Analysis

F29/100

ustc.edu.cnustc.edu.cn

中国科学技术大学

No description available for this page.

Title Length8 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1
• Many images missing alt text (11/11)

8 issues found

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Security Score

46%Poor

Interactive

HTTPS

No WAF

45d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

ZeroSSL

Key Algorithm

RSA (2048 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

30.12.2025

Valid Until

30.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

ustc.edu.cn

SHA-256 Fingerprint

55:42:37:1B:4C:B8:F6:79:DF:8E:41:40:04:E5:EF:4D:34:6F:CD:53...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 600s(private, max-age=600)

content-encoding

📦 Gzip(gzip)

content-language

zh-CN

content-length

7102

content-type

text/html

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

smtp2.ustc.edu.cn

smtp.ustc.edu.cn

Domain Information

ustc.edu.cn

DNSSEC

Not Enabled

Typography & Readability

Microsoft Yahei

45/100

Readability

/30

24/40

14px · LH 2.00

Hierarchy

/20

25/25

2.29x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Microsoft Yahei

Sans32px

Body Font

Microsoft Yahei

Sans14px

Contrast Ratio

Reading Comfort

~120 CPL

Needs attention

32px

22px

16px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Wide lines: ~120 chars/line. Consider max-width for better reading flow.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

news(8)local(8)_sitegray(1)

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Last analyzed: 13 Feb 2026 at 15:50

Historical Analysis & Change Tracking